Comparing the mechanical response of di-, tri-, and tetra-functional resin Epoxies with reactive molecular dynamics

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The influence of monomer functionality on the mechanical properties of epoxies is studied using molecular dynamics (MD) with the Reax Force Field (ReaxFF). From deformation simulations, the Young's modulus, yield point, and Poisson's ratio are calculated and analyzed. Comparison between the network structures of distinct epoxies is further advanced by the monomeric degree index (MDI). Experimental validation demonstrates the MD results correctly predict the relationship in Young's moduli. Therefore, ReaxFF is confirmed to be a useful tool for studying the mechanical behavior of epoxies.

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© 2017 Wiley Periodicals. Publisher's version of record: http://dx.doi.org/10.1002/polb.24539

Publication Title

Journal of Polymer Science, Part B: Polymer Physics